ToughRock Lightweight Veneer Plaster Base Gypsum Drywall
toughrock gypsum fire rated drywall panels

ToughRock® Lite-Weight Veneer Plaster Base

  • Lighter in weight – easier to lift, carry and install
  • Noncombustible gypsum core (per ASTM E136)
  • Designed for the application of gypsum veneer plasters meeting ASTM C587
Specially designed for the application of gypsum veneer plasters meeting ASTM C587.

ToughRock® Veneer Lite-Weight Plaster Base board is designed to bond with skim coats of specially formulated veneer plasters. These plasters form a surface that is much harder than typical gypsum wall board, making it less prone to dents and scratches. ToughRock Veneer Lite-Weight Plaster Base board is manufactured to meet the requirements of ASTM C1396 Section 10; CSA-A82.27-M; and Federal Specification SS-L-30D, Type VI, Grade R.

Lite Weight

Lighter in weight than traditional ToughRock® Veneer Plaster Base

Special Applications

Specially formulated face paper


Physical Properties

nominal inches: 1/2″ (12.7 mm) ± 1/64″ (0.4 mm)


nominal: 4′ (1220 mm) + 0″ –3/32″ (2.4 mm)


8′ (2440 mm) to 12′ (3658 mm) ± 1/4″ (6 mm)


lbs./sq. ft., nominal (kg/m2): 1.5 (7.3)1

R Value

°F•ft2•hr/BTU (m2•K/W): 0.45 (0.08)2

Humidified Deflection

10/8″ (32 mm)

Represents approximate weight for design and shipping purposes. Actual weight may vary depending on manufacturing location and other factors.  2 Per Gypsum Association document GA-235.

Product Resources

Tech Guides
Safety Data

Product FAQs

What happened to Georgia-Pacific's regular 1/2" gypsum board?

Georgia-Pacific has always made a quality 1/2″ paper-faced gypsum board. In the first half of 2015, Georgia-Pacific Gypsum introduced an upgraded 1/2″ paper-faced gypsum board called ToughRock® Fireguard 45™ Gypsum Board. The improved 1/2” board has enhanced fire-resistive properties and can replace standard and lightweight gypsum board in ALL 1/2″ wall and ceiling assemblies, including 24″ o.c. framed ceilings. ToughRock Fireguard 45 Gypsum Board is a standard weight 1/2″ interior wallboard that has achieved a 45-minute UL classified fire rating in select assemblies (consult local codes for actual requirements). For additional information concerning fire ratings and fire safety, go to

Research used to shape the innovation process considered consumer concerns about home fire safety. Learn more>>

What should we do if the gypsum board gets wet?
How often is a control joint required?
Should gypsum board be installed vertically or horizontally?
Can I use gypsum board in ceilings at 24" o.c. support?

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